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Given below are four statements (i)-(iv) regarding embryonic development in humans.
(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.
(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.
(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.
(iv) Cleavage divisions result in a solid ball of cells called morula.
Which of the above two statements are correct?
(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.
(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.
(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.
(iv) Cleavage divisions result in a solid ball of cells called morula.
Which of the above two statements are correct?
- a)(i) and (iii)
- b)(ii) and (iv)
- c)(i) and (ii)
- d)(iii) and (iv)
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Given below are four statements (i)-(iv) regarding embryonic developme...
Cleavage is a series of rapid mitotic divisions of the zygote, characterised by absence of growth in daughter cells, which converts a single celled zygote into a multicellular structure called blastocyst. It starts in the Fallopian tube and is holoblastic. Interphase in cleavage division is short and don not involve growth so that the resulting blastomeres become smaller in size as their number increases. During cleavage, at 8-16 celled stage, a solid ball of cells called morula (as it look like mulberry) is formed.
Most Upvoted Answer
Given below are four statements (i)-(iv) regarding embryonic developme...
Explanation:
To determine which statements are correct, let's analyze each statement individually:
(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.
- Correct: Cleavage divisions involve rapid cell divisions without an increase in the overall size of the embryo. Therefore, the mass of protoplasm increases during cleavage.
(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.
- Correct: Cleavage divisions lead to a progressive reduction in the size of blastomeres. As the zygote undergoes multiple rounds of cleavage, the number of blastomeres increases, and their individual size decreases.
(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.
- Incorrect: The blastomeres in the blastocyst are arranged into two distinct cell layers, but they are called the trophoblast and inner cell mass (ICM), not the endometrium.
(iv) Cleavage divisions result in a solid ball of cells called morula.
- Correct: Cleavage divisions lead to the formation of a solid ball of cells called a morula. The morula is formed after several rounds of cleavage divisions, and it precedes the formation of a blastocyst.
Conclusion:
Based on the analysis, the correct statements are (ii) and (iv). Therefore, the correct answer is option B (ii) and (iv).
To determine which statements are correct, let's analyze each statement individually:
(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.
- Correct: Cleavage divisions involve rapid cell divisions without an increase in the overall size of the embryo. Therefore, the mass of protoplasm increases during cleavage.
(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.
- Correct: Cleavage divisions lead to a progressive reduction in the size of blastomeres. As the zygote undergoes multiple rounds of cleavage, the number of blastomeres increases, and their individual size decreases.
(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.
- Incorrect: The blastomeres in the blastocyst are arranged into two distinct cell layers, but they are called the trophoblast and inner cell mass (ICM), not the endometrium.
(iv) Cleavage divisions result in a solid ball of cells called morula.
- Correct: Cleavage divisions lead to the formation of a solid ball of cells called a morula. The morula is formed after several rounds of cleavage divisions, and it precedes the formation of a blastocyst.
Conclusion:
Based on the analysis, the correct statements are (ii) and (iv). Therefore, the correct answer is option B (ii) and (iv).
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Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer?
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Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer?.
Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer?.
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ample number of questions to practice Given below are four statements (i)-(iv) regarding embryonic development in humans.(i) Cleavage divisions bring about considerable increase in the mass of protoplasm.(ii) With more cleavage divisions, the resultant blastomeres become smaller and smaller.(iii) The blastomeres in the blastocyst are arranged into two layers, trophoblast and endometrium.(iv) Cleavage divisions result in a solid ball of cells called morula.Which of the above two statements are correct?a)(i) and (iii)b)(ii) and (iv)c)(i) and (ii)d)(iii) and (iv)Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
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